Finding the Fourth Proportional to 1,070,990.20, 1,609,109.70 and 805,269.70
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Solution
The fourth proportional to 1,070,990.20, 1,609,109.70 and 805,269.70 is: 1,209,877.82
Step by Step Solution
- Step 1: Write the proportion equation
1,070,990.20 : 1,609,109.70 = 805,269.70 : x - Step 2: Convert to fraction form
1,070,990.20/1,609,109.70 = 805,269.70/x - Step 3: Cross multiply
1,070,990.20x = 1,609,109.70 × 805,269.70 - Step 4: Simplify right side
1,070,990.20x = 1,295,767,285,386.09 - Step 5: Solve for x
x = 1,295,767,285,386.09/1,070,990.20 - Step 6: Final answer
x = 1,209,877.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.